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          <th colspan="3" align="center">Chapter 1. Berkeley DB SQL: The Absolute Basics</th>
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          <div>
            <h2 class="title"><a id="dbsqlbasics"></a>Chapter 1. Berkeley DB SQL: The Absolute Basics</h2>
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      <div class="toc">
        <p>
          <b>Table of Contents</b>
        </p>
        <dl>
          <dt>
            <span class="sect1">
              <a href="dbsqlbasics.html#identicalusage">BDB SQL Is Nearly Identical to SQLite</a>
            </span>
          </dt>
          <dt>
            <span class="sect1">
              <a href="buildinstall.html">Getting and Installing BDB SQL</a>
            </span>
          </dt>
          <dd>
            <dl>
              <dt>
                <span class="sect2">
                  <a href="buildinstall.html#onwin">On Windows Systems</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="buildinstall.html#onunix">On Unix</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="buildinstall.html#ado_net">The BDB SQL ADO.NET Interface</a>
                </span>
              </dt>
            </dl>
          </dd>
          <dt>
            <span class="sect1">
              <a href="accessing_bdb_sql_databases.title.html">Accessing BDB SQL Databases</a>
            </span>
          </dt>
          <dt>
            <span class="sect1">
              <a href="journaldirectory.html">The Journal Directory</a>
            </span>
          </dt>
          <dt>
            <span class="sect1">
              <a href="unsupportedpragmas.html">Unsupported PRAGMAs</a>
            </span>
          </dt>
          <dt>
            <span class="sect1">
              <a href="changedpragmas.html">Changed PRAGMAs</a>
            </span>
          </dt>
          <dd>
            <dl>
              <dt>
                <span class="sect2">
                  <a href="changedpragmas.html#auto_vacuum">PRAGMA auto_vacuum</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="changedpragmas.html#incremental_vacuum">PRAGMA incremental_vacuum</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="changedpragmas.html#journal_size_limit">PRAGMA journal_size_limit</a>
                </span>
              </dt>
            </dl>
          </dd>
          <dt>
            <span class="sect1">
              <a href="addedpragmas.html">Added PRAGMAs</a>
            </span>
          </dt>
          <dd>
            <dl>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#bdbsql_error_file">PRAGMA bdbsql_error_file</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#bdbsql_lock_tablesize">PRAGMA bdbsql_lock_tablesize</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#bdbsql_shared_resources">PRAGMA bdbsql_shared_resources</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#bdbsql_single_process">PRAGMA bdbsql_single_process</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#bdbsql_system_memory">PRAGMA bdbsql_system_memory</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#bdbsql_vacuum_fillpercent">PRAGMA bdbsql_vacuum_fillpercent</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#bdbsql_vacuum_pages">PRAGMA bdbsql_vacuum_pages</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#multiversion">PRAGMA multiversion</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#snapshot_isolation">PRAGMA snapshot_isolation</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#trickle">PRAGMA trickle</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#txn_bulk">PRAGMA txn_bulk</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="addedpragmas.html#replication_pragmas">Replication PRAGMAs</a>
                </span>
              </dt>
            </dl>
          </dd>
          <dt>
            <span class="sect1">
              <a href="miscdiff.html">Miscellaneous Differences</a>
            </span>
          </dt>
          <dt>
            <span class="sect1">
              <a href="bdb-concepts.html">Berkeley DB Concepts</a>
            </span>
          </dt>
          <dt>
            <span class="sect1">
              <a href="sql_encryption.html">Encryption</a>
            </span>
          </dt>
          <dt>
            <span class="sect1">
              <a href="sequencesupport.html">Using Sequences</a>
            </span>
          </dt>
          <dd>
            <dl>
              <dt>
                <span class="sect2">
                  <a href="sequencesupport.html#create_sequence">create_sequence</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="sequencesupport.html#seq_nextval">nextval</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="sequencesupport.html#seq_currval">currval</a>
                </span>
              </dt>
              <dt>
                <span class="sect2">
                  <a href="sequencesupport.html#seq_drop_sequence">drop_sequence</a>
                </span>
              </dt>
            </dl>
          </dd>
          <dt>
            <span class="sect1">
              <a href="normal-sql.html">Differences for Users of other SQL Engines</a>
            </span>
          </dt>
        </dl>
      </div>
      <p>
            Welcome to the Berkeley DB SQL interface.  If you are a SQLite user who is
            using the BDB SQL interface for reasons other than performance
            enhancements, this chapter tells you the minimum things you
            need to know about the interface.  You should simply read this
            chapter and then skip the rest of this book.
        </p>
      <p>
            If, however, you are using the BDB SQL interface for performance reasons,
            then you need to read this chapter, plus most of the rest of
            the chapters in this book (although you can probably skip most
            of <a class="xref" href="admin.html" title="Chapter 5. Administrating Berkeley DB SQL Databases">Administrating Berkeley DB SQL Databases</a>, unless you 
            want to administer your database "the Berkeley DB way").
        </p>
      <p>
            Also, if you are an existing Berkeley DB user who is interested in
            the BDB SQL interface, read this chapter plus the rest of this book.
        </p>
      <div class="sect1" lang="en" xml:lang="en">
        <div class="titlepage">
          <div>
            <div>
              <h2 class="title" style="clear: both"><a id="identicalusage"></a>BDB SQL Is Nearly Identical to SQLite</h2>
            </div>
          </div>
        </div>
        <p>
                Your interaction with the BDB SQL interface is almost identical to
                SQLite. You use the same APIs, the same command shell
                environment, the same SQL statements, and the same PRAGMAs
                to work with the database created by the BDB SQL interface as you
                would if you were using SQLite.
            </p>
        <p>
                To learn how to use SQLite, see the official
                <a class="ulink" href="http://www.sqlite.org/docs.html" target="_top">SQLite
                    Documentation Page.</a>
            </p>
        <p>
                That said, there are a few small differences between the
                two interfaces. These are described in the remainder of
                this chapter.
            </p>
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